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@juanmottesi
juanmottesi committed Aug 22, 2023
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163 changes: 163 additions & 0 deletions .gitignore
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# Created by https://www.toptal.com/developers/gitignore/api/kotlin,maven,intellij
# Edit at https://www.toptal.com/developers/gitignore?templates=kotlin,maven,intellij

### Intellij ###
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839

# User-specific stuff
.idea
.idea/**/workspace.xml
.idea/**/tasks.xml
.idea/**/usage.statistics.xml
.idea/**/dictionaries
.idea/**/shelf

# AWS User-specific
.idea/**/aws.xml

# Generated files
.idea/**/contentModel.xml

# Sensitive or high-churn files
.idea/**/dataSources/
.idea/**/dataSources.ids
.idea/**/dataSources.local.xml
.idea/**/sqlDataSources.xml
.idea/**/dynamic.xml
.idea/**/uiDesigner.xml
.idea/**/dbnavigator.xml

# Gradle
.idea/**/gradle.xml
.idea/**/libraries

# Gradle and Maven with auto-import
# When using Gradle or Maven with auto-import, you should exclude module files,
# since they will be recreated, and may cause churn. Uncomment if using
# auto-import.
# .idea/artifacts
# .idea/compiler.xml
# .idea/jarRepositories.xml
# .idea/modules.xml
# .idea/*.iml
# .idea/modules
# *.iml
# *.ipr

# CMake
cmake-build-*/

# Mongo Explorer plugin
.idea/**/mongoSettings.xml

# File-based project format
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# IntelliJ
out/

# mpeltonen/sbt-idea plugin
.idea_modules/

# JIRA plugin
atlassian-ide-plugin.xml

# Cursive Clojure plugin
.idea/replstate.xml

# SonarLint plugin
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# Crashlytics plugin (for Android Studio and IntelliJ)
com_crashlytics_export_strings.xml
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crashlytics-build.properties
fabric.properties

# Editor-based Rest Client
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# Android studio 3.1+ serialized cache file
.idea/caches/build_file_checksums.ser

### Intellij Patch ###
# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721

# *.iml
# modules.xml
# .idea/misc.xml
# *.ipr

# Sonarlint plugin
# https://plugins.jetbrains.com/plugin/7973-sonarlint
.idea/**/sonarlint/

# SonarQube Plugin
# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
.idea/**/sonarIssues.xml

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# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
.idea/**/markdown-navigator.xml
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.idea/**/markdown-navigator/

# Cache file creation bug
# See https://youtrack.jetbrains.com/issue/JBR-2257
.idea/$CACHE_FILE$

# CodeStream plugin
# https://plugins.jetbrains.com/plugin/12206-codestream
.idea/codestream.xml

# Azure Toolkit for IntelliJ plugin
# https://plugins.jetbrains.com/plugin/8053-azure-toolkit-for-intellij
.idea/**/azureSettings.xml

### Kotlin ###
# Compiled class file
*.class

# Log file
*.log

# BlueJ files
*.ctxt

# Mobile Tools for Java (J2ME)
.mtj.tmp/

# Package Files #
*.jar
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# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*
replay_pid*

### Maven ###
target/
pom.xml.tag
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pom.xml.versionsBackup
pom.xml.next
release.properties
dependency-reduced-pom.xml
buildNumber.properties
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.mvn/wrapper/maven-wrapper.jar

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# Eclipse Core
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# JDT-specific (Eclipse Java Development Tools)
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# End of https://www.toptal.com/developers/gitignore/api/kotlin,maven,intellij
77 changes: 77 additions & 0 deletions pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>

<groupId>edu.unq</groupId>
<artifactId>steam-model</artifactId>
<version>1.0</version>
<packaging>jar</packaging>

<name>org.unq steam-model</name>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<kotlin.version>1.9.0</kotlin.version>
<kotlin.code.style>official</kotlin.code.style>
<junit.version>4.13.1</junit.version>
</properties>

<dependencies>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
<version>${kotlin.version}</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test-junit</artifactId>
<version>${kotlin.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<sourceDirectory>src/main/kotlin</sourceDirectory>
<testSourceDirectory>src/test/kotlin</testSourceDirectory>

<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<goals>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>8</source>
<target>8</target>
</configuration>
</plugin>
</plugins>
</build>

</project>
128 changes: 128 additions & 0 deletions src/main/kotlin/org/unq/SteamSystem.kt
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package org.unq

import org.unq.model.*

fun <E> getPage(list: List<E>, page: Int): PageInfo<E> {
if (page < 1) throw Exception("Page most be 1 or more")
val chunkedList = list.chunked(10)
return PageInfo(
currentPage = page,
list = chunkedList.getOrElse(page - 1) { listOf() },
amountOfElements = list.size,
amountOfPages = chunkedList.size,
)
}

class SteamSystem(
val games: List<Game>,
val developers: List<Developer>,
val tags: List<Tag>,
val users: MutableList<User>,
) {

private val idGenerator = IdGenerator()

fun addNewUser(user: DraftUser): User {
users.forEach {
if (it.email == user.email) throw UserException("Email is token")
}
val newUser = User(
idGenerator.nextUserId(),
user.email,
user.password,
user.name,
user.image,
user.backgroundImage,
mutableListOf(),
mutableListOf(),
)
users.add(newUser)
return newUser
}

fun getTag(id: String): Tag {
return tags.find { it.id == id } ?: throw NotFoundTag()
}

fun getUser(id: String): User {
return users.find { it.id == id } ?: throw NotFoundUser()
}

fun getGame(id: String): Game {
return games.find { it.id == id } ?: throw NotFoundGame()
}

fun getDeveloper(id: String): Developer {
return developers.find { it.id == id } ?: throw NotFoundDeveloper()
}

fun getUserReviews(userId: String): List<Review> {
val user = getUser(userId)
return games
.flatMap { game -> game.reviews }
.filter { it.user === user }
}

fun getRecommendedGames(): List<Game> {
return games
.sortedByDescending { game -> game.reviews.count { review -> review.isRecommended } }
.take(10)
}

fun getGames(page: Int = 1): PageInfo<Game> {
return getPage(games, page)
}

fun getGamesByTag(tagId: String, page: Int = 1): PageInfo<Game> {
val tag = getTag(tagId)
val filterGames = games.filter { it.tags.contains(tag) }
return getPage(filterGames, page)
}

fun getGamesByDeveloper(developerId: String, page: Int = 1): PageInfo<Game> {
val developer = getDeveloper(developerId)
val filterGames = games.filter { it.developer == developer }
return getPage(filterGames, page)
}

fun searchGame(name: String, page: Int = 1): PageInfo<Game> {
val filterGames = games.filter { it.name.contains(name, true) }
return getPage(filterGames, page)
}

fun searchUser(name: String, page: Int = 1): PageInfo<User> {
val filterUsers = users.filter { it.name.contains(name, true) }
return getPage(filterUsers, page)
}

fun addReview(userId: String, draftReview: DraftReview): Game {
val user = getUser(userId)
val game = getGame(draftReview.gameId)
if (!user.games.contains(game)) throw ReviewException("You need to own the game to leave a review")
game.reviews.find { it.user == user }?.let { throw ReviewException("You've already submitted a review for this game") }
game.reviews.add(Review(idGenerator.nextReviewId(), user, draftReview.isRecommended, draftReview.text))
return game
}

fun purchaseGame(userId: String, draftPurchase: DraftPurchase): User {
val user = getUser(userId)
val game = getGame(draftPurchase.gameId)
if(user.games.contains(game)) throw PurchaseException("You already have the game")
user.games.add(game)
return user
}

fun addOrRemoveFriend(userId: String, friendId: String): User {
if (userId == friendId) throw UserException("You cannot self-add.")
val user = getUser(userId)
val friend = getUser(friendId)
if (user.friends.remove(friend)) {
friend.friends.remove(user)
} else {
user.friends.add(friend)
friend.friends.add(user)
}
return user
}

}
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